identity of the Origami Killer.

If Lauren survived the sinking car, Scott will tell her to go hide in a safe spot until he has sorted through his Origami Killer mess.

Scott will then have another flashback as John Sheppard's younger brother. You will have to run to the young boy's father, who is drunk and ask for help. He won't help and tells you to get lost, so run back to John who is now holding on to his dear life trying to keep from drowning. Watch the rest of the scenes and move on.

Now that we see the Origami Killer at his safe place, the only thing to do is burn all the evidence. Throw all the evidence into the dump bin and light the matches to set these items on fire.